| 超临界CO_2增强聚合物加工的研究与应用进展 |
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| 引用本文： | 蒋春跃,皮建彪,潘勤敏.超临界CO_2增强聚合物加工的研究与应用进展[J].高分子材料科学与工程,2009(10). |
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| 作者姓名： | 蒋春跃 皮建彪 潘勤敏 |
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| 作者单位： | 浙江工业大学化工与材料科学学院;Department of Chemical Engineering University of Waterloo; |
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| 基金项目： | 国家自然科学基金资助项目(20576123) |
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| 摘 要： | 对超临界CO2环境中聚合物加工方法的研究、应用现状与进展进行了综述。基于SC-CO2对聚合物的增塑作用,可开发出许多相关用途,如聚合物改性、聚合物共混、聚合物复合材料、多孔微泡沫材料、微粒化以及聚合物浸渍/灌注/插嵌等。在对研究现状和结果进行梳理总结后,认为SC-CO2对聚合物加工过程的增强作用机理可归结为:SC-CO2对聚合物的溶胀,导致增塑,进而降低了聚合物的玻璃化温度、黏度、表面张力,增强了小分子化合物在聚合基质中的扩散系数。此外,CO2作为绿色溶剂,是有机溶剂的良好替代品,因此具有广阔的应用前景。
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| 关 键 词： | 超临界CO2 溶解度 增塑效应 扩散系数 聚合物 |
Review of Supercritical Carbon Dioxide Assisted Polymer Processing |
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| JIANG Chun-yue,PI Jian-biao,PAN Qin-min.Review of Supercritical Carbon Dioxide Assisted Polymer Processing[J].Polymer Materials Science & Engineering,2009(10). |
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| Authors: | JIANG Chun-yue PI Jian-biao PAN Qin-min |
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| Affiliation: | JIANG Chun-yue1,PI Jian-biao1,PAN Qin-min2(1.College of Chemical Engineering and Materials Science,Zhejiang University of Technology,Hangzhou 310014,China,2.Department of Chemical Engineering,University of Waterloo,Waterloo,Ontario,Canada N2L 3G1) |
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| Abstract: | The new research advances in polymer processing with supercritical CO2 were reviewed.The effects of supercritical CO2 on polymer processing,such as polymer modification,polymer blending,formation of polymer composites,microcellular foaming,particle production,and infusion of additives,were discussed.Its unique properties such as gas-like diffusivity and liquid-like density allow replacing conventional,often noxious,solvents with supercritical CO2.Though only a few polymers are soluble in supercritical CO2,i... |
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| Keywords: | supercritical CO2 solubility plasticization diffusitivity polymer |
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